Patents by Inventor Liwen Chu

Liwen Chu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210143884
    Abstract: Various embodiments relate to a system and method for joint sounding by a client with a master access point (AP) and a slave (AP), including: receiving a message from the master AP; applying network allocation vector (NAV) rules to update a NAV values, wherein the received message is treated as an intra-basic service set (BSS) message when the transmit address (TA) of the received message has a prespecified value; receiving a first trigger frame; and transmitting a first channel state information (CSI) to the master AP when the channel is idle based upon the updated NAV value in response to the trigger frame.
    Type: Application
    Filed: November 10, 2020
    Publication date: May 13, 2021
    Inventors: Young Hoon KWON, Liwen CHU, Sudhir SRINIVASA, Hongyuan ZHANG, Huiling LOU
  • Publication number: 20210144637
    Abstract: Aspects of the present disclosure involve negotiating a TWT agreement by communicating which links, of a multi-link system as may be used in WiFi communications, are to be used for negotiating the TWT agreement. This communication may be accomplished, for example, by using fields of the MAC header, individual TWT parameter set, or broadcast TWT parameter set.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 13, 2021
    Inventors: Young Hoon Kwon, Liwen Chu, Hongyuan Zhang, Huiling Lou
  • Publication number: 20210143951
    Abstract: In an IEEE 802.11bc wireless system, aggregated data frames are communicated between first and second STA devices by configuring the first STA device to assemble and transmit an A-MPDU frame having multiple A-MPDU subframes characterized by a fixed MPDU start spacing parameter and a fixed maximal MPDU length parameter, where the first STA device is configured with the fixed MPDU start spacing parameter and the fixed maximal MPDU length parameter without negotiating association request and response messages, and by configuring the second STA device to assemble and transmit a BA message comprising a BA bitmap identifying the one or more of the multiple A-MPDU subframes which are not successfully received by the second STA device, where the BA bitmap has a size characterized by a fixed buffer size parameter which is configured at the second STA device without negotiating add BA request (ADDBA Request) request and response messages.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 13, 2021
    Applicant: NXP USA, Inc.
    Inventors: Liwen Chu, Rui Cao, Hongyuan Zhang, Huiling Lou
  • Publication number: 20210144787
    Abstract: Embodiments of an apparatus and method are disclosed. In an embodiment, a method of multi-link communications involves at an access point (AP) multi-link device, allocating Association IDs (AIDs) to non-AP multi-link devices, including allocating one of the AIDs to each of the non-AP multi-link devices, and at the AP multi-link device, generating a first indication element for the AIDs to indicate a buffered data configuration at the AP multi-link device for the non-AP multi-link devices.
    Type: Application
    Filed: November 10, 2020
    Publication date: May 13, 2021
    Inventors: Young Hoon KWON, Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20210144698
    Abstract: A method for multi-antenna processing in multi-link wireless communication systems includes transmitting by a first MLD, a first capability defining a first number of Spatial Streams (SS) supported by the first MLD for a single link exchange over one of a subset of links from a plurality of links between the first MLD and a second MLD. A second capability is transmitted by the first MLD defining a second number of SS supported by the first MLD for each link of a multi-link exchange. At least one Radio Frequency (RF) chain of the first MLD is configured to enable communication over the subset of links from the plurality of links.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 13, 2021
    Inventors: Young Hoon Kwon, Rui Cao, Liwen Chu, Hongyuan Zhang, Huiling Lou
  • Patent number: 11006416
    Abstract: A first communication device allocates respective portions of a communication channel, that includes at least one primary component channel and one or more non-primary component channels, to a plurality of second communication devices, including a bandwidth-limited second communication device configured to operate with a maximum bandwidth that is less than a full bandwidth of the communication channel. The bandwidth-limited second communication device is operating in a particular component channel, and allocation of a frequency portion to the bandwidth-limited second communication device is restricted to the particular component channel.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: May 11, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Lei Wang, Hongyuan Zhang, Yakun Sun, Jinjing Jiang, Hui-Ling Lou
  • Patent number: 10998953
    Abstract: A first communication device generates a beamforming training initiator packet for transmission in a wireless communication network. The beamforming training initiator packet indicates a start of a beamforming training session, and includes a plurality of fields that respectively and individually identify multiple second communication devices that are to process beamforming training packets transmitted by the first communication device during the beamforming training session. The first communication device transmits the beamforming training initiator packet, and then transmits a plurality of beamforming training packets during the beamforming training session.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: May 4, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Jinjing Jiang, Liwen Chu, Lei Wang, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10986639
    Abstract: A first communication device determines assignment of at least a first orthogonal frequency division multiplex (OFDM) tone block and a second OFDM tone block for communication with a second communication device in a wireless local area network (WLAN). The first OFDM tone block is separated from the second OFDM tone block by a gap in frequency. The first communication device generates a physical layer (PHY) data unit for transmission to the second communication device, including generating a data portion of the PHY data unit that spans the first OFDM tone block and the second OFDM tone block. The first communication device transmits the PHY data unit to the second communication device via the first OFDM tone block and the second OFDM tone block such that no data is transmitted in the third OFDM tone block for the data portion of the PHY data unit.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: April 20, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Hongyuan Zhang, Yakun Sun, Hui-Ling Lou, Liwen Chu
  • Patent number: 10986600
    Abstract: A first communication device generates a first ranging frame for transmission to a set of second communication devices, and transmitting the first ranging frame during an multi-user (MU) ranging measurement procedure for estimating respective distances between respective second communication devices, among the set of second communication devices, and the first communication device based on measuring times of flight of transmissions between the first communication device and the respective second communication devices. The first communication device then generates a second ranging frame to include timing information corresponding to transmission of the first ranging frame, the timing information indicative of a time of transmission of the first ranging frame by the first communication device.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: April 20, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Christian Berger, Niranjan Grandhe, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210112518
    Abstract: A first communication device determines which one or more types of feedback information, from among a plurality of types of feedback information associated with a range measurement exchange session, a second communication device is to provide to the first communication device in a feedback packet transmitted as part of the range measurement exchange session. The first communication device transmits to the second communication device one or more indications of the determined one or more types of feedback information that the second communication device is to provide to the first communication device in the feedback packet. The first communication device performs the range measurement exchange, including receiving the feedback packet from the second communication device, wherein the feedback packet includes the determined one or more types of feedback information.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventors: Liwen CHU, Hongyuan ZHANG, Christian R. BERGER, Niranjan GRANDHE, Sudhir SRINIVASA, Hui-Ling LOU
  • Publication number: 20210105094
    Abstract: A first communication device generates and transmits a first communication frame corresponding to a request to participate in a block acknowledgment procedure. The first communication frame includes: a first field indicating a number of buffers requested to be allocated at a second communication device for buffering data units to be transmitted by the first communication device, and a second field indicating a first maximum bitmap length supported by the first communication device. The first communication device receives a second communication frame corresponding to a response to the first communication frame. The second communication frame includes: a third field indicating a number of buffers allocated at the second communication device for buffering the data units transmitted by the first communication device, and a fourth field indicating a second maximum bitmap length supported by the second communication device.
    Type: Application
    Filed: November 23, 2020
    Publication date: April 8, 2021
    Inventors: Liwen CHU, Ken Kinwah HO, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 10972196
    Abstract: A first communication device generates and transmits a first trigger frame. One or more trigger type information fields of the first trigger frame are set to a first one or more respective values that indicates the first trigger frame is for: i) a multi-user (MU) ranging measurement procedure, and ii) causing multiple second communication devices to simultaneously transmit first null data packets (NDPs) as part of a first MU transmission associated with the MU ranging measurement procedure. The first communication device generates and transmits a second trigger frame. One or more trigger type information fields of the second trigger frame are set to a second one or more respective values that indicates the second trigger frame is for i) an MU ranging measurement procedure, and ii) causing the multiple second communication devices to simultaneously transmit feedback packets to the first communication device as part of a second MU transmission associated with the MU ranging measurement procedure.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 6, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Christian R. Berger, Niranjan Grandhe, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210099908
    Abstract: A first communication device receives one or more aggregate medium access control (MAC) data units from respective one or more second communication devices. Respective aggregate MAC data units include multiple MAC data units from respective ones of the one or more second communication devices. The first communication device generates one or more acknowledgement information fields, including a first acknowledgement information field corresponding to a particular second communication device includes i) a length indication that indicates a length of an acknowledgement field, and ii) the acknowledgment field of the indicated length. The acknowledgement field includes respective acknowledgement information for at least some of the multiple MAC data units received from the particular second communication device.
    Type: Application
    Filed: December 11, 2020
    Publication date: April 1, 2021
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-ling Lou
  • Patent number: 10966280
    Abstract: A first communication device generates a media access control (MAC) protocol data unit (MPDU) delimiter having i) a feedback indication field and ii) a feedback content field. The feedback indication field is generated to include a first value that indicates the MPDU delimiter includes the feedback content field rather than an MPDU length field corresponding to a second value of the feedback indication field. The feedback content field is generated to include feedback information such as acknowledgement information regarding a communication frame previously transmitted by a second communication device, or control, management, and/or status information regarding the first communication device that was previously requested by the second communication device. The first communication device then transmits a packet that includes the MPDU delimiter to the second communication device.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: March 30, 2021
    Assignee: NXP USA, Inc.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10966227
    Abstract: A method for wireless local area network (WLAN) communication by a first WLAN communication device is described. A first media access control (MAC) data unit is generated at the first WLAN communication device. The first MAC data unit is transmitted from the first WLAN communication device to a second WLAN communication device via a first WLAN communication channel having a first radio frequency (RF) bandwidth. A second MAC data unit is received at the first WLAN communication device from the second WLAN communication device via a second WLAN communication channel having a second RF bandwidth that does not overlap the first RF bandwidth. The second MAC data unit corresponds to an acknowledgment of the first MAC data unit from the second WLAN communication device.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: March 30, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Hongyuan Zhang, Liwen Chu
  • Patent number: 10966200
    Abstract: A communication device determines an overall bandwidth of an operating channel for a wireless local area network (WLAN), where the overall bandwidth spans a plurality of sub-channels. The communication device determines that one or more sub-channels within the overall bandwidth will not be used for the operating channel, and generates a packet that includes i) a first subfield that indicates the overall bandwidth of the operating channel, and ii) a second subfield that indicates the one or more sub-channels within the overall bandwidth that will not be used for the operating channel. The communication device transmits the packet to inform one or more other communication devices in the WLAN of the operating channel for the WLAN, the operating channel.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: March 30, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10959229
    Abstract: A communication device generates a first data unit that spans a first bandwidth, and transmits the first data unit during a transmit opportunity (TXOP) to at least one other communication device. The communication device subsequently determines, based on respective values of TXOP duration fields included in respective physical layer (PHY) preambles of one or more data units previously transmitted during the TXOP, whether a second bandwidth of a second data unit to be transmitted by the communication device during the TXOP can be greater than the first bandwidth of the first data unit. In response to determining that the second bandwidth of the second data unit can be greater than the first bandwidth of the first data unit, the communication device generates the second data unit to span the second bandwidth greater than the first bandwidth, and transmits the second data unit during the TXOP.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: March 23, 2021
    Assignee: Marvell Asia Pte, Ltd
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10952216
    Abstract: An access point generates a management communication frame, that includes information indicating network parameters of a wireless communication network, for transmission in an operating channel of the wireless communication network. The operating channel including i) at least one primary component channel used at least for synchronizing with client stations associated with the access point and ii) at least one scanning channel specified, by the first communication protocol, to be used for scanning by client stations not associated with the access point. The access point generates a physical layer data unit to include the management communication frame, and transmits the physical layer data unit in the at least one scanning channel, specified by the first communication protocol, to allow discovery of the wireless communication network by client stations that are not associated with the access point.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: March 16, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210076439
    Abstract: A method for simultaneously communicating with multiple communication devices in a wireless local area network is described. Multiple uplink data units are received that are simultaneously transmitted by multiple second communication devices. The multiple uplink data units include a management data unit and a traffic data unit. An acknowledgment data unit is generated to acknowledge receipt of the multiple data units. The acknowledgment data unit includes (i) an indication that indicates that the acknowledgment data unit is intended for the multiple second communication devices, and (ii) respective acknowledgment information fields for the multiple second communication devices. The respective acknowledgment information fields include a first acknowledgment information field for the management data unit and a second acknowledgment information field for the traffic data unit.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-ling Lou
  • Publication number: 20210076356
    Abstract: Certain specific examples are directed to or involve a plurality of vehicular communication stations including a first type and a second type which communicate over a shared communications channel characterized by a common RF frequency band. The stations may also include at least one of the plurality of vehicular communication stations broadcasting a set of vehicle-specific data over the shared communication channel for reception by the first type according to a first wireless communication protocol and concurrently for reception by the second type according to a second different wireless communication protocol. The broadcast may include a plurality of repetitive consecutive transmissions of the set of vehicle-specific data which may allow for improved range extension and reliability. Each of the repetitive consecutive transmissions may be formatted consistent with the first wireless communication protocol.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Inventors: Hongyuan Zhang, Rui Cao, Yan Zhang, Liwen Chu